It shouldn't but it can. I put a new one on a Super H, it leaked, not much but a constant drip. I put in more packing, it still leaked. I replaced the IH packing with a rope from NAPA, still dripped. I gave up and it eventually stopped. You don't want to tighten it all the way, then everything is compressed and it will leak. Mine is currently ok, don't know for how long. Made in Asia, it should be expected, probably best to rebuild the old one.

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